diff --git a/README b/README
index 542b8c0421ef0ae8ac832243323d4ee9e017a3f3..092ab7df4139c14efaa83c96e0c02298e2b2dd15 100644
--- a/README
+++ b/README
@@ -113,6 +113,10 @@
 
  The MDC2 algorithm is patented by IBM.
 
+ NTT and Mitsubishi have patents and pending patents on the Camellia
+ algorithm, but allow use at no charge without requiring an explicit
+ licensing agreement: http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html
+
  INSTALLATION
  ------------